The international she-hero for successful career gals who are destined to become bearded cat women in their later years has finally managed to land herself a man.

Too bad he already belonged to someone else.

A publicist for Hollywood costume designer Heidi Bivens has confirmed that she ended her 14-year relationship with actor and writer Justin Theroux.

“Heidi and Justin have been together for 14 years. They met when she was 20 years old and he 24, and yes, she just moved out of their home last weekend. She has no comment,” the rep confirmed on Tuesday.

Official word of the split comes amid weeks of reports claiming Theroux is romantically involved with his Wanderlust co-star. Three guesses who that is. Aniston and Theroux were snapped at the MTV Movie Awards after party – that’s Justin on the right with the beard (nice photobombing Jason Sudeikis!)

“Heidi is heartbroken. She was completely blindsided. She and Justin had been together for years, they had a home. Then he met Jennifer and everything changed. At first he claimed he and Jen were friends,” a snoop tells The New York Post.

However, friends of Justin say his relationship with Heidi was over long before he met Jennifer, 42, on set last year, which absolves the aging bombshell of all guilt in Theroux’s split.

“Things were already over between him and Heidi before he got close to Jen,” one snoop insists.

“Heidi and Justin have been together for 14 years,” Bivens’ publicist told The Post. “They met when she was 20 years old and he 24, and yes, she just moved out of their home last weekend. She has no comment.”

Sound familiar? Aniston’s ex-husband, actor Brad Pitt, famously divorced her after working with Angelina Jolie on the 2005 film Mr. & Mrs. Smith. The twosome — now known as “Brangelina” — went on to have six children together.